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Method to Control Product Post-Fold

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The IP.com Prior Art Database

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Katie M. Nackers: AUTHOR

Abstract

This publication describes a method for transporting a folded product through a roll-based folding process, where the product is asymmetric about the folding line. Instead of employing a complicated mechanical device, this method uses vacuum zones that match the shape of the outer layer of the product to maintain control of the product after the fold.

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This is the abbreviated version, containing approximately
56% of the total text.

ABSTRACT

This
publication describes a method for transporting a folded product through a
roll-based folding process, where the product is asymmetric about the folding
line. Instead of employing a complicated
mechanical device, this method uses vacuum zones that match the shape of the
outer layer of the product to maintain control of the product after the
fold.

INTRODUCTION

For
certain roll-based product folding sequences, a product is folded, then
transported to a secondary station where the product fold registration is fixed
through fastening or bonding means.
During the transportation phase of the operation, the front and back
portions of the product can become out of phase. This is because traditionally a product is
held in place with vacuum, and when a product is folded over on itself, with
typical material permeability and operational speeds, the outer portion of the
product does not receive enough vacuum pressure through the inner portion to
maintain control. Other devices rely on
complicated mechanical devices to maintain the fold. A new method is proposed that will utilize
zoned vacuum to maintain fold integrity without a complicated mechanical
device.

METHODOLOGY

If a
product is designed such that the front and the back portions are not
symmetrical as shown in Figure 1,
an apparatus can be designed to optimally control both portions of the product
after the fol...